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The ignition system is crucial for your engine's performance, and a full tune-up requires replacing both the ignition coils and the spark plugs. This set provides a complete, matched solution for your 6-cylinder engine. The ignition coils are responsible for transforming the vehicle's low battery voltage into the thousands of volts required to create a powerful spark. The spark plugs then deliver that spark to the engine's combustion chamber, igniting the air-fuel mixture. When these components wear out, it can lead to engine misfires, a rough idle, poor acceleration, and decreased fuel economy. By replacing them as a set, you ensure consistent performance across all cylinders, preventing future issues and restoring your engine to its optimal running condition.